Concentration and Solubility

Solutions Dissolving one substance into another makes a solution. The substance that dissolves is the solute. The substance that does the dissolving is called the solvent. E.g. Kool-aid = solute water = solvent

If you want your lemonade to be concentrated you would add a large amount of ________ to a small amount of _________. If you want your lemonade to be diluted you would add a small amount of ________ to a large amount of _________. Solute Solvent Solute Solvent

Concentration The concentration of a solution is the amount of solute dissolved in a specific amount of solvent. E.g. A solution with 50g of solute in 100mL of solvent has a concentration of 50g/100mL

Comparing Solutions You have three drinks in front of you. You know how they were made, but are unsure which has the highest concentration of juice crystals. The first drink has 10g of crystals dissolved in 50mL of water. The second drink has 15g of crystals dissolved in 100mL of water. The third drink has 6g of crystals dissolved in 25mL of water. Work with a partner to make a plan to figure out the concentrations of each drink. What was the most concentrated drink? How did you figure this out since all the drinks had a different amount of solvent?

Comparing Solutions To compare concentrations you need to know the amount of solute in the same amount of solvent. E.g. 10g of salt in 50mL of water compared to 25g of salt in 100mL of water.

Give it a Try p. 24

Saturation If we add juice crystals to water and they continue to dissolve, the solution is unsaturated. If no more crystals can dissolve, the solution is saturated.